1. Then, almost 400 years ago, an Italian scientist named Galileo began to question Aristotle´s theory of falling objects.
    后来, 大约在四百年前, 一位名叫伽利略的意大利科学家开始怀疑亚里斯多德的落体学说.

2. The sagas of these people explain that some of them came from Indonesia about 2,000 years ago.
    有关这些人的传说解释道:他们中的一些人是大约两千年前从印度尼西亚来的.

3. The sagas of these people explain that some of them came from Indonesia about 2,000 years ago.
    当地人的传说却告诉人们：其中一部分是约在2,000年前从印度尼西亚迁来的。

4. These legends are useful because they can tell us something about migrations of people who lived long ago,
    这些传说是有用的，因为他们告诉我们很久以前生活在这里的移民的一些事情。

5. The big clock which used to strike the hours day and night was damaged many years ago and has been silent ever since.
    教堂的钟很大，以前不分昼夜打点报时，但很多年前遭到毁坏，从此便无声无息了。

6. The instrument was bought by my grandfather many years ago.
    是我祖父在很多年以前买的。

7. Tony worked in a lawyer´s office years ago, but he is now working at a bank.
    托尼曾在一家律师事务所工作，而现在正在一家银行上班。

8. The airport was built years ago, but for some reason it could not be used then.
    机场是许多年前建的，但由于某种原因当时未能启用。

9. The house was completed five months ago.
    是在5个月以前竣工的。

10. The tree was planted near the church fifty years ago, but it is only in recent years that it has gained an evil reputation.
    该树是50年前栽在教堂附近的，但只是近几年才得到了一个坏名声。